公开(公告)号：US20190113900A1

公开(公告)日：2019-04-18

申请号：US16217679

申请日：2018-12-12

Applicant: Solaredge Technologies, Ltd.

Inventor： Ilan Yoscovich ,  Yoav Galin ,  Amir Fishelov ,  Yakir Loewenstern ,  David Braginsky ,  Lior Handelsman ,  Ohad Gidon ,  Guy Sella ,  Gil Litmanovitch

IPC: G05B19/042

CPC classification number: G05B19/042 ,  G05B2219/2639

Abstract: Various implementations described herein are directed to a method for determining an order of power devices connected in a serial string. A command is transmitted, to at least one first power device of a plurality of power devices, to change an output electrical parameter. At least one electrical signal is caused to be transmitted from at least one second power device of the plurality of power devices. At least one measured value responsive to the electrical signal is received from at least one of the plurality of power devices. A determination is made, by analyzing the at least one measured value, which ones of the plurality of power devices are ordered in the serial string between the at least one first power device and the at least one second power device.

公开(公告)号：US20180366945A1

公开(公告)日：2018-12-20

申请号：US15998858

申请日：2018-08-17

Applicant: Solaredge Technologies Ltd.

Inventor： David Braginsky ,  Ilan Yoscovich ,  Tzachi Glovinsky

IPC: H02H7/20 ,  H02J7/00 ,  H02J3/38 ,  H02M7/06 ,  H02M7/5387

Abstract: A method for a power system having a string of a plurality of power sources connected across a power device includes connecting a plurality of safe voltage units having safety switches connected respectively across each of the power sources. The method includes sensing a plurality of parameters of the power sources, and monitoring for a signal transmitted from the power device. Each of the safety switches is activated to be OFF responsive to detecting the signal within a predetermined time period. Upon not detecting the signal from the power device within the predetermined time period, a safe mode of operation of the power system is entered in which the voltages of each of the power sources is reduced to a voltage level less than a predetermined voltage level by turning the safety switches ON.

公开(公告)号：US20180337555A1

公开(公告)日：2018-11-22

申请号：US15983382

申请日：2018-05-18

Applicant: Solaredge Technologies Ltd.

Inventor： David Braginsky ,  Yoav Galin ,  Ilan Yoscovich

IPC: H02J13/00 ,  H04B3/56 ,  H04B3/54

CPC classification number: H04B3/548 ,  H04B2203/5458 ,  H04B2203/547

Abstract: A network unit may be operatively attached to power lines of an interconnected power system and/or a device such as a power module that may further include a communication interface. The network unit may be operable to superimpose a first signal representative of a sensed parameter of the power system onto the power lines, thereby to transmit the first signal to other power modules in the interconnected power system or to a power device in interconnected power system. The network unit may receive a second signal of the parameter superimposed onto the power lines from another network unit.

公开(公告)号：US20180287484A1

公开(公告)日：2018-10-04

申请号：US15924564

申请日：2018-03-19

Applicant: Solaredge Technologies Ltd.

Inventor： David Braginsky ,  Ilan Yoscovich ,  Tzachi Glovinsky

IPC: H02M1/32

CPC classification number: H02M1/32 ,  H02J3/385 ,  H02J7/0016 ,  H02M7/44 ,  H02M2001/0077 ,  H02M2001/325 ,  Y02E10/58

Abstract: A method and apparatus to bypass, using bypass circuits, non-operating power modules in a power system. Multiple power sources are coupled to inputs of respective power modules. Multiple bypass circuits have respective terminals operatively coupled to the respective outputs of the power modules. The outputs of the power modules are coupled in a series connection and the series connection is coupled across a load. Each bypass circuit includes a switch operatively coupled across a first input of a circuit and an output of a power module. A feedback circuit includes a second input coupled to an output of the circuit. A coupling circuit includes a third input coupled to an output of the feedback circuit. The coupling circuit includes an output operatively coupled across the switch. The switch is biased to provide the bypass responsive to a voltage of the output of the circuit and the voltage of the power module output.

公开(公告)号：US20170170782A1

公开(公告)日：2017-06-15

申请号：US15407881

申请日：2017-01-17

Applicant: Solaredge Technologies Ltd.

Inventor： Ilan Yoscovich ,  Guy Sella ,  Meir Gazit ,  Yoav Galin ,  David Braginsky ,  Lior Handelsman ,  Meir Adest ,  Yakir Loewenstern ,  Tzachi Glovinsky

IPC: H02S50/10 ,  H02H7/20 ,  H02H1/00 ,  H02H3/16

Abstract: Methods for arc detection in a system including one or more photovoltaic generators, one or more photovoltaic power devices and a system power device and/or a load connectible to the photovoltaic generators and/or the photovoltaic power devices. The methods measure voltage, voltage noise and/or power delivered to the load or system power device. The methods may compare one or more measurements, an aggregation of measurements and/or values estimated from the measurements to one or more thresholds, and upon a comparison indicating a potential arcing condition, an alarm condition may be set. Embodiments include an arrangement of photovoltaic generators and photovoltaic power devices for reduced-impedance voltage loops which may enhance arc-detection capabilities.